Synonyms:
firework, pyrotechnic
Meaning: (usually plural) a device with an explosive that burns at a low rate and with colored flames; can be used to illuminate areas or send signals etc.
Usage examples
So brilliant was the snow-glare that when she entered the house she saw the door-knobs, the newspaper on the table, every white surface as dazzling mauve, and her head was dizzy in the pyrotechnic dimness.